And now it's gone.
I noticed a few weeks ago that the windmill wasn't spinning quite as fast as before. Originally even a light breeze was enough to set it off but recently it needed quite a strong wind to produce any effect. A few days ago one of the vanes looked distinctly wonky and I thought that the pole was starting to vibrate dangerously. Yesterday Mrs F & W saw engineers remove the vanes and today I see that the whole device has gone. The engineers took photographs of the pole fittings on the gable end and I've read that vibration can cause serious damage to walls.
Bring back nukes.